转载【判断 ipad，iphone，android，手机，电脑登录页面 】

var bForcepc=fGetQuery("dv") == "pc";
function fBrowserRedirect() {
debugger;
var sUserAgent = navigator.userAgent.toLowerCase();
var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
var bIsMidp = sUserAgent.match(/midp/i) == "midp";
var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
var bIsAndroid = sUserAgent.match(/android/i) == "android";
var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
if(bIsIpad){
var sUrl = location.href;
if(!bForcepc){
window.location.href = "http://baidu.com/";
}
}
if(bIsIphoneOs || bIsAndroid){
var sUrl = location.href;
if(!bForcepc){
window.location.href = "http://google.com/";
}
}
if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){
var sUrl = location.href;
if(!bForcepc){
window.location.href = "http://www.sina.com/";
}
}
}

function fGetQuery(name){//获取参数值
var sUrl = window.location.search.substr(1);
var r = sUrl.match(new RegExp("(^|&)" + name + "=([^&]*)(&|$)"));
return (r == null ? null : unescape(r[2]));
}

function fShowVerBlock(){
if(bForcepc){
document.getElementById("dv_block").style.display = "block";
}
else{
document.getElementById("reg_block").style.display = "block";
}
}
function fBodyOnLoad(){
fFQ();
fShowVerBlock();
setTimeout(fIndexPreload,100)
}
fBrowserRedirect();